Terry Hancock wrote: > I'm not sure either, yet, but can you indicate which line in your > listing is 102 in the source file? That might be helpful. 101: ## f1.normal = copy.deepcopy(f.normal) 102: f1.normal = NMesh.Vert(f.normal[0], f.normal[1], f.normal[2]) I've tried with deepcopy, but the result is exactly same. -- _red ____ _ ____ ____ __ _